Energy Recovery ERII Institutional Ownership

NASDAQ ERII

$6.65 +0.01 (+0.15%)

At close: Oct 21, 2026 · 4:00 PM EDT

Institutions by Trading Activity

197 Institutions

Increased 120 60.9%

Unchanged 32 16.2%

Reduced 45 22.8%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

85.02%

▲+0.98 pp QoQ

Shares Held by Institutions

43.75Mn

of 51.46Mn outstanding

▼-1.14% QoQ

Shares Outstanding

51.46Mn

7.71Mn held outside 13F filers

Institutional Investors

197

filed 13F for Jun 2026

■0 vs prior quarter

Net Shares Added (QoQ)

-503.59K

distributed since last quarter

Value of Holdings

$290.53Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Updated Oct 16, 2026

Energy Recovery, Inc. (NASDAQ:ERII) was reported as a holding by 197 institutional investors in 13F filings for the quarter ended June 30, 2026.

These investors held 85.02% of outstanding shares in Q2 2026, up from 84.04% the quarter before.
Total holdings of ERII shares fell 1.14% from Q1 2026, and the holder count rose 9.44% from Q2 2025.
Among the 197 holders of Energy Recovery, 120 added to their positions, 45 reduced their stakes and 32 left their positions unchanged.
Institutional investors held 43.75Mn shares of Energy Recovery in total at the end of Q2 2026, down 503.59K from the prior quarter and down 563.95K from a year earlier.
BlackRock, Inc. held the largest position in ERII at 6.34Mn shares as of June 30, 2026, or 12.33% of shares outstanding.
Holders that added the most shares of Energy Recovery in Q2 2026 were Marshall Wace, LLP (+570.95K shares), Morgan Stanley (+444.31K shares), Lazard Asset Management LLC (+432.63K shares), Zurcher Kantonalbank (+410.95K shares) and Geode Capital Management, LLC (+402.44K shares).
Among holders that kept a stake in Energy Recovery, the biggest sellers in Q2 2026 were Ameriprise Financial Inc (-4.58Mn shares), FIL Ltd (-272.2K shares), Brown Capital Management LLC (-255.2K shares), FMR LLC (-235.99K shares) and SG Americas Securities, LLC (-222.05K shares).
Per Business Quant data, the 10 largest holders of Energy Recovery at the end of Q2 2026 were BlackRock, Inc. (6.34Mn shares), Amundi (4Mn shares), Vanguard Capital Management LLC (2.18Mn shares), Legal & General Group PLC (2.06Mn shares), FIL Ltd (1.72Mn shares), Geode Capital Management, LLC (1.7Mn shares), State Street Corp (1.63Mn shares), Vanguard Portfolio Management LLC (1.26Mn shares), Morgan Stanley (1.24Mn shares) and Mackenzie Financial Corp (1.19Mn shares).

Form 13F Holdings

197 Institutional Holders

Report period 30 Jun, 2026

Total shares held 43.75Mn

Of outstanding 85.02%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	6,344,252	12.33%	▲253,326	+4.16%	$57.23Mn
2	Amundi	0001330387	4,003,535	7.78%	▲263,226	+7.04%	$36.09Mn
3	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	2,183,718	4.24%	▼46,552	-2.09%	$19.70Mn
4	Legal & General Group Plc	0000764068	2,059,764	4.00%	▲157,239	+8.26%	$18.58Mn
5	FIL Ltd	0000318989	1,715,722	3.33%	▼272,197	-13.69%	$15.48Mn
6	GEODE CAPITAL MANAGEMENT, LLC	0001214717	1,697,550	3.30%	▲402,442	+31.07%	$15.31Mn
7	State Street Corp	0000093751	1,625,893	3.16%	▼147,055	-8.29%	$14.67Mn
8	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	1,263,667	2.46%	▲2,006	+0.16%	$11.40Mn
9	Morgan Stanley	0000895421	1,237,003	2.40%	▲444,312	+56.05%	$11.16Mn
10	MACKENZIE FINANCIAL CORP	0000919859	1,187,686	2.31%	▲1,187,686	0.00%	$10.71Mn
11	Invesco Ltd.	0000914208	925,550	1.80%	▲99,254	+12.01%	$8.35Mn
12	DIMENSIONAL FUND ADVISORS LP	0000354204	878,724	1.71%	▲1,293	+0.15%	$7.93Mn
13	ArrowMark Colorado Holdings LLC	0001483859	847,000	1.65%	▲331,000	+64.15%	$7.64Mn
14	ROYCE & ASSOCIATES LP	0000906304	752,812	1.46%	▲269,794	+55.86%	$6.79Mn
15	AVENIR CORP	0001033475	693,886	1.35%	▼123,869	-15.15%	$6.26Mn
16	Ameriprise Financial Inc	0000820027	679,236	1.32%	▼4,580,580	-87.09%	$6.13Mn
17	MARSHALL WACE, LLP	0001318757	677,248	1.32%	▲570,951	+537.13%	$6.11Mn
18	Kopion Asset Management, LLC	0001728689	639,545	1.24%	▲132,580	+26.15%	$5.77Mn
19	Goldman Sachs Group Inc	0000886982	601,335	1.17%	▲132,800	+28.34%	$5.42Mn
20	683 Capital Management, LLC	0001404574	530,000	1.03%	▼20,000	-3.64%	$4.78Mn

Showing 1 to 20 of 197 holders